^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) * Cypress APA trackpad with I2C interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Author: Dudley Du <dudl@cypress.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Further cleanup and restructuring by:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Daniel Kurtz <djkurtz@chromium.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Benson Leung <bleung@chromium.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Copyright (C) 2011-2015 Cypress Semiconductor, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) * Copyright (C) 2011-2012 Google, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) * This file is subject to the terms and conditions of the GNU General Public
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) * License. See the file COPYING in the main directory of this archive for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * more details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/i2c.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/input.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/input/mt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/interrupt.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <linux/regulator/consumer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/pm_runtime.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/acpi.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include "cyapa.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #define CYAPA_ADAPTER_FUNC_NONE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) #define CYAPA_ADAPTER_FUNC_I2C 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define CYAPA_ADAPTER_FUNC_SMBUS 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #define CYAPA_ADAPTER_FUNC_BOTH 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define CYAPA_FW_NAME "cyapa.bin"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) const char product_id[] = "CYTRA";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static int cyapa_reinitialize(struct cyapa *cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) bool cyapa_is_pip_bl_mode(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) if (cyapa->gen == CYAPA_GEN6 && cyapa->state == CYAPA_STATE_GEN6_BL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_BL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) bool cyapa_is_pip_app_mode(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) if (cyapa->gen == CYAPA_GEN6 && cyapa->state == CYAPA_STATE_GEN6_APP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) if (cyapa->gen == CYAPA_GEN5 && cyapa->state == CYAPA_STATE_GEN5_APP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static bool cyapa_is_bootloader_mode(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (cyapa_is_pip_bl_mode(cyapa))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) if (cyapa->gen == CYAPA_GEN3 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) cyapa->state >= CYAPA_STATE_BL_BUSY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) cyapa->state <= CYAPA_STATE_BL_ACTIVE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static inline bool cyapa_is_operational_mode(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) if (cyapa_is_pip_app_mode(cyapa))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (cyapa->gen == CYAPA_GEN3 && cyapa->state == CYAPA_STATE_OP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) /* Returns 0 on success, else negative errno on failure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) static ssize_t cyapa_i2c_read(struct cyapa *cyapa, u8 reg, size_t len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) u8 *values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) struct i2c_client *client = cyapa->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct i2c_msg msgs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) .addr = client->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) .flags = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) .len = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) .buf = ®,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) .addr = client->addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) .flags = I2C_M_RD,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) .len = len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) .buf = values,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (ret != ARRAY_SIZE(msgs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) return ret < 0 ? ret : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) * cyapa_i2c_write - Execute i2c block data write operation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * @cyapa: Handle to this driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @ret: Offset of the data to written in the register map
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) * @len: number of bytes to write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) * @values: Data to be written
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) * Return negative errno code on error; return zero when success.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static int cyapa_i2c_write(struct cyapa *cyapa, u8 reg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) size_t len, const void *values)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) struct i2c_client *client = cyapa->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) char buf[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) if (len > sizeof(buf) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) buf[0] = reg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) memcpy(&buf[1], values, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) ret = i2c_master_send(client, buf, len + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (ret != len + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) return ret < 0 ? ret : -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static u8 cyapa_check_adapter_functionality(struct i2c_client *client)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) u8 ret = CYAPA_ADAPTER_FUNC_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) ret |= CYAPA_ADAPTER_FUNC_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) if (i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) I2C_FUNC_SMBUS_BLOCK_DATA |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) I2C_FUNC_SMBUS_I2C_BLOCK))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) ret |= CYAPA_ADAPTER_FUNC_SMBUS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) * Query device for its current operating state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) static int cyapa_get_state(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) u8 status[BL_STATUS_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) u8 cmd[32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* The i2c address of gen4 and gen5 trackpad device must be even. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) bool even_addr = ((cyapa->client->addr & 0x0001) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) bool smbus = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) int retries = 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) cyapa->state = CYAPA_STATE_NO_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) * Get trackpad status by reading 3 registers starting from 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) * If the device is in the bootloader, this will be BL_HEAD.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * If the device is in operation mode, this will be the DATA regs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) error = cyapa_i2c_reg_read_block(cyapa, BL_HEAD_OFFSET, BL_STATUS_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * On smbus systems in OP mode, the i2c_reg_read will fail with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * -ETIMEDOUT. In this case, try again using the smbus equivalent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * command. This should return a BL_HEAD indicating CYAPA_STATE_OP.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) if (cyapa->smbus && (error == -ETIMEDOUT || error == -ENXIO)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!even_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) error = cyapa_read_block(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) CYAPA_CMD_BL_STATUS, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) smbus = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (error != BL_STATUS_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) * Detect trackpad protocol based on characteristic registers and bits.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) cyapa->status[REG_OP_STATUS] = status[REG_OP_STATUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) cyapa->status[REG_BL_STATUS] = status[REG_BL_STATUS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) cyapa->status[REG_BL_ERROR] = status[REG_BL_ERROR];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) if (cyapa->gen == CYAPA_GEN_UNKNOWN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) cyapa->gen == CYAPA_GEN3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) error = cyapa_gen3_ops.state_parse(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) status, BL_STATUS_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) goto out_detected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) if (cyapa->gen == CYAPA_GEN_UNKNOWN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) cyapa->gen == CYAPA_GEN6 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) cyapa->gen == CYAPA_GEN5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) error = cyapa_pip_state_parse(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) status, BL_STATUS_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) goto out_detected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) /* For old Gen5 trackpads detecting. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if ((cyapa->gen == CYAPA_GEN_UNKNOWN ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) cyapa->gen == CYAPA_GEN5) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) !smbus && even_addr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) error = cyapa_gen5_ops.state_parse(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) status, BL_STATUS_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) goto out_detected;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) * Write 0x00 0x00 to trackpad device to force update its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) * status, then redo the detection again.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (!smbus) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) cmd[0] = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) cmd[1] = 0x00;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) error = cyapa_i2c_write(cyapa, 0, 2, cmd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) msleep(50);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) error = cyapa_i2c_read(cyapa, BL_HEAD_OFFSET,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) BL_STATUS_SIZE, status);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) } while (--retries > 0 && !smbus);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) goto error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) out_detected:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) if (cyapa->state <= CYAPA_STATE_BL_BUSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) error:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) return (error < 0) ? error : -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * Poll device for its status in a loop, waiting up to timeout for a response.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) * When the device switches state, it usually takes ~300 ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * However, when running a new firmware image, the device must calibrate its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) * sensors, which can take as long as 2 seconds.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) * Note: The timeout has granularity of the polling rate, which is 100 ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) * 0 when the device eventually responds with a valid non-busy state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) * -ETIMEDOUT if device never responds (too many -EAGAIN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) * -EAGAIN if bootload is busy, or unknown state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) * < 0 other errors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) int cyapa_poll_state(struct cyapa *cyapa, unsigned int timeout)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) int tries = timeout / 100;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) do {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) error = cyapa_get_state(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (!error && cyapa->state > CYAPA_STATE_BL_BUSY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) msleep(100);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) } while (tries--);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) return (error == -EAGAIN || error == -ETIMEDOUT) ? -ETIMEDOUT : error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) * Check if device is operational.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * An operational device is responding, has exited bootloader, and has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) * firmware supported by this driver.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) * Returns:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) * -ENODEV no device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) * -EBUSY no device or in bootloader
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) * -EIO failure while reading from device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) * -ETIMEDOUT timeout failure for bus idle or bus no response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) * -EAGAIN device is still in bootloader
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * if ->state = CYAPA_STATE_BL_IDLE, device has invalid firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) * -EINVAL device is in operational mode, but not supported by this driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) * 0 device is supported
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) static int cyapa_check_is_operational(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) error = cyapa_poll_state(cyapa, 4000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) switch (cyapa->gen) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) case CYAPA_GEN6:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) cyapa->ops = &cyapa_gen6_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) case CYAPA_GEN5:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) cyapa->ops = &cyapa_gen5_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) case CYAPA_GEN3:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) cyapa->ops = &cyapa_gen3_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) error = cyapa->ops->operational_check(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (!error && cyapa_is_operational_mode(cyapa))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) cyapa->operational = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) cyapa->operational = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) * Returns 0 on device detected, negative errno on no device detected.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) * And when the device is detected and operational, it will be reset to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) * full power active mode automatically.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) static int cyapa_detect(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) error = cyapa_check_is_operational(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) if (error != -ETIMEDOUT && error != -ENODEV &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) cyapa_is_bootloader_mode(cyapa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dev_warn(dev, "device detected but not operational\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) dev_err(dev, "no device detected: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) static int cyapa_open(struct input_dev *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) struct cyapa *cyapa = input_get_drvdata(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) struct i2c_client *client = cyapa->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) * though failed to set active power mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) * but still may be able to work in lower scan rate
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) * when in operational mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) error = cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) PWR_MODE_FULL_ACTIVE, 0, CYAPA_PM_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) dev_warn(dev, "set active power failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) error = cyapa_reinitialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) if (error || !cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) error = error ? error : -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) if (!pm_runtime_enabled(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) pm_runtime_set_active(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) pm_runtime_mark_last_busy(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) pm_runtime_put_sync_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) static void cyapa_close(struct input_dev *input)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) struct cyapa *cyapa = input_get_drvdata(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) struct i2c_client *client = cyapa->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) mutex_lock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) if (pm_runtime_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) pm_runtime_set_suspended(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) if (cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) PWR_MODE_OFF, 0, CYAPA_PM_DEACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) static int cyapa_create_input_dev(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) struct input_dev *input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) if (!cyapa->physical_size_x || !cyapa->physical_size_y)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) input = devm_input_allocate_device(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) if (!input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) dev_err(dev, "failed to allocate memory for input device.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) input->name = CYAPA_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) input->phys = cyapa->phys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) input->id.bustype = BUS_I2C;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) input->id.version = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) input->id.product = 0; /* Means any product in eventcomm. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) input->dev.parent = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) input->open = cyapa_open;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) input->close = cyapa_close;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) input_set_drvdata(input, cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) __set_bit(EV_ABS, input->evbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) /* Finger position */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) input_set_abs_params(input, ABS_MT_POSITION_X, 0, cyapa->max_abs_x, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) input_set_abs_params(input, ABS_MT_POSITION_Y, 0, cyapa->max_abs_y, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) input_set_abs_params(input, ABS_MT_PRESSURE, 0, cyapa->max_z, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) if (cyapa->gen > CYAPA_GEN3) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) input_set_abs_params(input, ABS_MT_TOUCH_MAJOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) input_set_abs_params(input, ABS_MT_TOUCH_MINOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) * Orientation is the angle between the vertical axis and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) * the major axis of the contact ellipse.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) * The range is -127 to 127.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * the positive direction is clockwise form the vertical axis.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * If the ellipse of contact degenerates into a circle,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) * orientation is reported as 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) * Also, for Gen5 trackpad the accurate of this orientation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) * value is value + (-30 ~ 30).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) input_set_abs_params(input, ABS_MT_ORIENTATION,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) -127, 127, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) if (cyapa->gen >= CYAPA_GEN5) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) input_set_abs_params(input, ABS_MT_WIDTH_MAJOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) input_set_abs_params(input, ABS_MT_WIDTH_MINOR, 0, 255, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) input_set_abs_params(input, ABS_DISTANCE, 0, 1, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) input_abs_set_res(input, ABS_MT_POSITION_X,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) cyapa->max_abs_x / cyapa->physical_size_x);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) input_abs_set_res(input, ABS_MT_POSITION_Y,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) cyapa->max_abs_y / cyapa->physical_size_y);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (cyapa->btn_capability & CAPABILITY_LEFT_BTN_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) __set_bit(BTN_LEFT, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) if (cyapa->btn_capability & CAPABILITY_MIDDLE_BTN_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) __set_bit(BTN_MIDDLE, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) if (cyapa->btn_capability & CAPABILITY_RIGHT_BTN_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) __set_bit(BTN_RIGHT, input->keybit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (cyapa->btn_capability == CAPABILITY_LEFT_BTN_MASK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) __set_bit(INPUT_PROP_BUTTONPAD, input->propbit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) /* Handle pointer emulation and unused slots in core */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) error = input_mt_init_slots(input, CYAPA_MAX_MT_SLOTS,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) INPUT_MT_POINTER | INPUT_MT_DROP_UNUSED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) dev_err(dev, "failed to initialize MT slots: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) /* Register the device in input subsystem */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) error = input_register_device(input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) dev_err(dev, "failed to register input device: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) cyapa->input = input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) static void cyapa_enable_irq_for_cmd(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) struct input_dev *input = cyapa->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (!input || !input->users) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * When input is NULL, TP must be in deep sleep mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * In this mode, later non-power I2C command will always failed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * if not bring it out of deep sleep mode firstly,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * so must command TP to active mode here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) if (!input || cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) PWR_MODE_FULL_ACTIVE, 0, CYAPA_PM_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) /* Gen3 always using polling mode for command. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (cyapa->gen >= CYAPA_GEN5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) enable_irq(cyapa->client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) static void cyapa_disable_irq_for_cmd(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) struct input_dev *input = cyapa->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (!input || !input->users) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) if (cyapa->gen >= CYAPA_GEN5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) disable_irq(cyapa->client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) if (!input || cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) PWR_MODE_OFF, 0, CYAPA_PM_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * cyapa_sleep_time_to_pwr_cmd and cyapa_pwr_cmd_to_sleep_time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) * These are helper functions that convert to and from integer idle
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) * times and register settings to write to the PowerMode register.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) * The trackpad supports between 20ms to 1000ms scan intervals.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) * The time will be increased in increments of 10ms from 20ms to 100ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) * From 100ms to 1000ms, time will be increased in increments of 20ms.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) * When Idle_Time < 100, the format to convert Idle_Time to Idle_Command is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) * Idle_Command = Idle Time / 10;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) * When Idle_Time >= 100, the format to convert Idle_Time to Idle_Command is:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) * Idle_Command = Idle Time / 20 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) u8 cyapa_sleep_time_to_pwr_cmd(u16 sleep_time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) u16 encoded_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) sleep_time = clamp_val(sleep_time, 20, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) encoded_time = sleep_time < 100 ? sleep_time / 10 : sleep_time / 20 + 5;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return (encoded_time << 2) & PWR_MODE_MASK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) u16 cyapa_pwr_cmd_to_sleep_time(u8 pwr_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) u8 encoded_time = pwr_mode >> 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) return (encoded_time < 10) ? encoded_time * 10
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) : (encoded_time - 5) * 20;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) /* 0 on driver initialize and detected successfully, negative on failure. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) static int cyapa_initialize(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) int error = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) cyapa->state = CYAPA_STATE_NO_DEVICE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) cyapa->gen = CYAPA_GEN_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) mutex_init(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) * Set to hard code default, they will be updated with trackpad set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * default values after probe and initialized.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) cyapa->suspend_power_mode = PWR_MODE_SLEEP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) cyapa->suspend_sleep_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) cyapa_pwr_cmd_to_sleep_time(cyapa->suspend_power_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) /* ops.initialize() is aimed to prepare for module communications. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) error = cyapa_gen3_ops.initialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) error = cyapa_gen5_ops.initialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) if (!error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) error = cyapa_gen6_ops.initialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) error = cyapa_detect(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) /* Power down the device until we need it. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) PWR_MODE_OFF, 0, CYAPA_PM_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) static int cyapa_reinitialize(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) struct input_dev *input = cyapa->input;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) if (pm_runtime_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) /* Avoid command failures when TP was in OFF state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) PWR_MODE_FULL_ACTIVE, 0, CYAPA_PM_ACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) error = cyapa_detect(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (!input && cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) error = cyapa_create_input_dev(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) dev_err(dev, "create input_dev instance failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) if (!input || !input->users) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) /* Reset to power OFF state to save power when no user open. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) if (cyapa->operational)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) PWR_MODE_OFF, 0, CYAPA_PM_DEACTIVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) } else if (!error && cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * Make sure only enable runtime PM when device is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) * in operational mode and input->users > 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) pm_runtime_set_active(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) pm_runtime_enable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) pm_runtime_mark_last_busy(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) pm_runtime_put_sync_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) static irqreturn_t cyapa_irq(int irq, void *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) struct cyapa *cyapa = dev_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) pm_wakeup_event(dev, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) /* Interrupt event can be caused by host command to trackpad device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (cyapa->ops->irq_cmd_handler(cyapa)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * Interrupt event maybe from trackpad device input reporting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) if (!cyapa->input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * Still in probing or in firmware image
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) * updating or reading.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) cyapa->ops->sort_empty_output_data(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) NULL, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) error = cyapa->ops->irq_handler(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) * Apply runtime power management to touch report event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) * except the events caused by the command responses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) * Note:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) * It will introduce about 20~40 ms additional delay
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) * time in receiving for first valid touch report data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) * The time is used to execute device runtime resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) * process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) pm_runtime_mark_last_busy(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) pm_runtime_put_sync_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (!cyapa->operational || error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) if (!mutex_trylock(&cyapa->state_sync_lock)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) cyapa->ops->sort_empty_output_data(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) NULL, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) cyapa_reinitialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) return IRQ_HANDLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) **************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) * sysfs interface
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) **************************************************************
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) #ifdef CONFIG_PM_SLEEP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) static ssize_t cyapa_show_suspend_scanrate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) u8 pwr_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) u16 sleep_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) int len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) pwr_cmd = cyapa->suspend_power_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) sleep_time = cyapa->suspend_sleep_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) switch (pwr_cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) case PWR_MODE_BTN_ONLY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) len = scnprintf(buf, PAGE_SIZE, "%s\n", BTN_ONLY_MODE_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) case PWR_MODE_OFF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) len = scnprintf(buf, PAGE_SIZE, "%s\n", OFF_MODE_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) len = scnprintf(buf, PAGE_SIZE, "%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) cyapa->gen == CYAPA_GEN3 ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) cyapa_pwr_cmd_to_sleep_time(pwr_cmd) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) sleep_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) return len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) static ssize_t cyapa_update_suspend_scanrate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) u16 sleep_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (sysfs_streq(buf, BTN_ONLY_MODE_NAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) cyapa->suspend_power_mode = PWR_MODE_BTN_ONLY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) } else if (sysfs_streq(buf, OFF_MODE_NAME)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) cyapa->suspend_power_mode = PWR_MODE_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) } else if (!kstrtou16(buf, 10, &sleep_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) cyapa->suspend_sleep_time = min_t(u16, sleep_time, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) cyapa->suspend_power_mode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) cyapa_sleep_time_to_pwr_cmd(cyapa->suspend_sleep_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) count = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) static DEVICE_ATTR(suspend_scanrate_ms, S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) cyapa_show_suspend_scanrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) cyapa_update_suspend_scanrate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) static struct attribute *cyapa_power_wakeup_entries[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) &dev_attr_suspend_scanrate_ms.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) static const struct attribute_group cyapa_power_wakeup_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) .name = power_group_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) .attrs = cyapa_power_wakeup_entries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) static void cyapa_remove_power_wakeup_group(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) struct cyapa *cyapa = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) sysfs_unmerge_group(&cyapa->client->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) &cyapa_power_wakeup_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) static int cyapa_prepare_wakeup_controls(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) struct i2c_client *client = cyapa->client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (device_can_wakeup(dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) error = sysfs_merge_group(&dev->kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) &cyapa_power_wakeup_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) dev_err(dev, "failed to add power wakeup group: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) error = devm_add_action(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) cyapa_remove_power_wakeup_group, cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) cyapa_remove_power_wakeup_group(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) dev_err(dev, "failed to add power cleanup action: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) static inline int cyapa_prepare_wakeup_controls(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) #endif /* CONFIG_PM_SLEEP */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) #ifdef CONFIG_PM
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) static ssize_t cyapa_show_rt_suspend_scanrate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) u8 pwr_cmd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) u16 sleep_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) pwr_cmd = cyapa->runtime_suspend_power_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) sleep_time = cyapa->runtime_suspend_sleep_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) return scnprintf(buf, PAGE_SIZE, "%u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) cyapa->gen == CYAPA_GEN3 ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) cyapa_pwr_cmd_to_sleep_time(pwr_cmd) :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) sleep_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) static ssize_t cyapa_update_rt_suspend_scanrate(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) u16 time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) if (buf == NULL || count == 0 || kstrtou16(buf, 10, &time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) dev_err(dev, "invalid runtime suspend scanrate ms parameter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) * When the suspend scanrate is changed, pm_runtime_get to resume
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) * a potentially suspended device, update to the new pwr_cmd
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) * and then pm_runtime_put to suspend into the new power mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) cyapa->runtime_suspend_sleep_time = min_t(u16, time, 1000);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) cyapa->runtime_suspend_power_mode =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) cyapa_sleep_time_to_pwr_cmd(cyapa->runtime_suspend_sleep_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) pm_runtime_put_sync_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) return count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) static DEVICE_ATTR(runtime_suspend_scanrate_ms, S_IRUGO|S_IWUSR,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) cyapa_show_rt_suspend_scanrate,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) cyapa_update_rt_suspend_scanrate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) static struct attribute *cyapa_power_runtime_entries[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) &dev_attr_runtime_suspend_scanrate_ms.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) static const struct attribute_group cyapa_power_runtime_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) .name = power_group_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) .attrs = cyapa_power_runtime_entries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) static void cyapa_remove_power_runtime_group(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) struct cyapa *cyapa = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) sysfs_unmerge_group(&cyapa->client->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) &cyapa_power_runtime_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) static int cyapa_start_runtime(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) cyapa->runtime_suspend_power_mode = PWR_MODE_IDLE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) cyapa->runtime_suspend_sleep_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) cyapa_pwr_cmd_to_sleep_time(cyapa->runtime_suspend_power_mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) error = sysfs_merge_group(&dev->kobj, &cyapa_power_runtime_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) "failed to create power runtime group: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) error = devm_add_action(dev, cyapa_remove_power_runtime_group, cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) cyapa_remove_power_runtime_group(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) dev_err(dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) "failed to add power runtime cleanup action: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) /* runtime is enabled until device is operational and opened. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) pm_runtime_set_suspended(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) pm_runtime_use_autosuspend(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) pm_runtime_set_autosuspend_delay(dev, AUTOSUSPEND_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) static inline int cyapa_start_runtime(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) #endif /* CONFIG_PM */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) static ssize_t cyapa_show_fm_ver(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) error = scnprintf(buf, PAGE_SIZE, "%d.%d\n", cyapa->fw_maj_ver,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) cyapa->fw_min_ver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) static ssize_t cyapa_show_product_id(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) size = scnprintf(buf, PAGE_SIZE, "%s\n", cyapa->product_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) static int cyapa_firmware(struct cyapa *cyapa, const char *fw_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) struct device *dev = &cyapa->client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) const struct firmware *fw;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) error = request_firmware(&fw, fw_name, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) dev_err(dev, "Could not load firmware from %s: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) fw_name, error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) error = cyapa->ops->check_fw(cyapa, fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) dev_err(dev, "Invalid CYAPA firmware image: %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) fw_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) * Resume the potentially suspended device because doing FW
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) * update on a device not in the FULL mode has a chance to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) * fail.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) pm_runtime_get_sync(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) /* Require IRQ support for firmware update commands. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) cyapa_enable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) error = cyapa->ops->bl_enter(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) dev_err(dev, "bl_enter failed, %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) goto err_detect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) error = cyapa->ops->bl_activate(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) dev_err(dev, "bl_activate failed, %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) goto err_detect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) error = cyapa->ops->bl_initiate(cyapa, fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) dev_err(dev, "bl_initiate failed, %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) goto err_detect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) error = cyapa->ops->update_fw(cyapa, fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) dev_err(dev, "update_fw failed, %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) goto err_detect;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) err_detect:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) cyapa_disable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) pm_runtime_put_noidle(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) release_firmware(fw);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) static ssize_t cyapa_update_fw_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) char fw_name[NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) int ret, error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) if (count >= NAME_MAX) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) dev_err(dev, "File name too long\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) memcpy(fw_name, buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) if (fw_name[count - 1] == '\n')
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) fw_name[count - 1] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) fw_name[count] = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) if (cyapa->input) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * Force the input device to be registered after the firmware
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) * image is updated, so if the corresponding parameters updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * in the new firmware image can taken effect immediately.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) input_unregister_device(cyapa->input);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) cyapa->input = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) * Whatever, do reinitialize to try to recover TP state to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) * previous state just as it entered fw update entrance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) cyapa_reinitialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) error = cyapa_firmware(cyapa, fw_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) dev_err(dev, "firmware update failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) dev_dbg(dev, "firmware update successfully done.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) * Re-detect trackpad device states because firmware update process
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) * will reset trackpad device into bootloader mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) ret = cyapa_reinitialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) dev_err(dev, "failed to re-detect after updated: %d\n", ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) error = error ? error : ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) return error ? error : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) static ssize_t cyapa_calibrate_store(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) struct device_attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) cyapa_enable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) error = cyapa->ops->calibrate_store(dev, attr, buf, count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) cyapa_disable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) error = -EBUSY; /* Still running in bootloader mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) return error < 0 ? error : count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) static ssize_t cyapa_show_baseline(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) ssize_t error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) cyapa_enable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) error = cyapa->ops->show_baseline(dev, attr, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) cyapa_disable_irq_for_cmd(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) error = -EBUSY; /* Still running in bootloader mode. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) static char *cyapa_state_to_string(struct cyapa *cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) switch (cyapa->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) case CYAPA_STATE_BL_BUSY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) return "bootloader busy";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) case CYAPA_STATE_BL_IDLE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) return "bootloader idle";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) case CYAPA_STATE_BL_ACTIVE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) return "bootloader active";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) case CYAPA_STATE_GEN5_BL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) case CYAPA_STATE_GEN6_BL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) return "bootloader";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) case CYAPA_STATE_OP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) case CYAPA_STATE_GEN5_APP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) case CYAPA_STATE_GEN6_APP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) return "operational"; /* Normal valid state. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) return "invalid mode";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) static ssize_t cyapa_show_mode(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) struct device_attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) size = scnprintf(buf, PAGE_SIZE, "gen%d %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) cyapa->gen, cyapa_state_to_string(cyapa));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) static DEVICE_ATTR(firmware_version, S_IRUGO, cyapa_show_fm_ver, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) static DEVICE_ATTR(product_id, S_IRUGO, cyapa_show_product_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) static DEVICE_ATTR(update_fw, S_IWUSR, NULL, cyapa_update_fw_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) static DEVICE_ATTR(baseline, S_IRUGO, cyapa_show_baseline, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) static DEVICE_ATTR(calibrate, S_IWUSR, NULL, cyapa_calibrate_store);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) static DEVICE_ATTR(mode, S_IRUGO, cyapa_show_mode, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) static struct attribute *cyapa_sysfs_entries[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) &dev_attr_firmware_version.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) &dev_attr_product_id.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) &dev_attr_update_fw.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) &dev_attr_baseline.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) &dev_attr_calibrate.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) &dev_attr_mode.attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) static const struct attribute_group cyapa_sysfs_group = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) .attrs = cyapa_sysfs_entries,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) static void cyapa_disable_regulator(void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) struct cyapa *cyapa = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) regulator_disable(cyapa->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) static int cyapa_probe(struct i2c_client *client,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) const struct i2c_device_id *dev_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) struct device *dev = &client->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) struct cyapa *cyapa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) u8 adapter_func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) union i2c_smbus_data dummy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) adapter_func = cyapa_check_adapter_functionality(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) if (adapter_func == CYAPA_ADAPTER_FUNC_NONE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) dev_err(dev, "not a supported I2C/SMBus adapter\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) return -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) /* Make sure there is something at this address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) if (i2c_smbus_xfer(client->adapter, client->addr, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) I2C_SMBUS_READ, 0, I2C_SMBUS_BYTE, &dummy) < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) cyapa = devm_kzalloc(dev, sizeof(struct cyapa), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) if (!cyapa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) /* i2c isn't supported, use smbus */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) if (adapter_func == CYAPA_ADAPTER_FUNC_SMBUS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) cyapa->smbus = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276) cyapa->client = client;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) i2c_set_clientdata(client, cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) sprintf(cyapa->phys, "i2c-%d-%04x/input0", client->adapter->nr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) client->addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) cyapa->vcc = devm_regulator_get(dev, "vcc");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) if (IS_ERR(cyapa->vcc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) error = PTR_ERR(cyapa->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) dev_err(dev, "failed to get vcc regulator: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) error = regulator_enable(cyapa->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) dev_err(dev, "failed to enable regulator: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) error = devm_add_action(dev, cyapa_disable_regulator, cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) cyapa_disable_regulator(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) dev_err(dev, "failed to add disable regulator action: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) error = cyapa_initialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) dev_err(dev, "failed to detect and initialize tp device.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) error = devm_device_add_group(dev, &cyapa_sysfs_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) dev_err(dev, "failed to create sysfs entries: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) error = cyapa_prepare_wakeup_controls(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) dev_err(dev, "failed to prepare wakeup controls: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) error = cyapa_start_runtime(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) dev_err(dev, "failed to start pm_runtime: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) error = devm_request_threaded_irq(dev, client->irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) NULL, cyapa_irq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) "cyapa", cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) dev_err(dev, "failed to request threaded irq: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) /* Disable IRQ until the device is opened */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) * Register the device in the input subsystem when it's operational.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) * Otherwise, keep in this driver, so it can be be recovered or updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) * through the sysfs mode and update_fw interfaces by user or apps.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) error = cyapa_create_input_dev(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) dev_err(dev, "create input_dev instance failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) static int __maybe_unused cyapa_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) struct cyapa *cyapa = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) u8 power_mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) error = mutex_lock_interruptible(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * Runtime PM is enable only when device is in operational mode and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) * users in use, so need check it before disable it to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * avoid unbalance warning.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) if (pm_runtime_enabled(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) pm_runtime_disable(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) disable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) * Set trackpad device to idle mode if wakeup is allowed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) * otherwise turn off.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) if (cyapa->operational) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) power_mode = device_may_wakeup(dev) ? cyapa->suspend_power_mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) : PWR_MODE_OFF;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) error = cyapa->ops->set_power_mode(cyapa, power_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) cyapa->suspend_sleep_time, CYAPA_PM_SUSPEND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) dev_err(dev, "suspend set power mode failed: %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) * Disable proximity interrupt when system idle, want true touch to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) * wake the system.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) if (cyapa->dev_pwr_mode != PWR_MODE_OFF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) cyapa->ops->set_proximity(cyapa, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) if (device_may_wakeup(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) cyapa->irq_wake = (enable_irq_wake(client->irq) == 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) static int __maybe_unused cyapa_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) struct i2c_client *client = to_i2c_client(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) struct cyapa *cyapa = i2c_get_clientdata(client);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) mutex_lock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) if (device_may_wakeup(dev) && cyapa->irq_wake) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) disable_irq_wake(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) cyapa->irq_wake = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) * Update device states and runtime PM states.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) * Re-Enable proximity interrupt after enter operational mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) error = cyapa_reinitialize(cyapa);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) dev_warn(dev, "failed to reinitialize TP device: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) enable_irq(client->irq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) mutex_unlock(&cyapa->state_sync_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) static int __maybe_unused cyapa_runtime_suspend(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) error = cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) cyapa->runtime_suspend_power_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) cyapa->runtime_suspend_sleep_time,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) CYAPA_PM_RUNTIME_SUSPEND);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) dev_warn(dev, "runtime suspend failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) static int __maybe_unused cyapa_runtime_resume(struct device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) struct cyapa *cyapa = dev_get_drvdata(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) error = cyapa->ops->set_power_mode(cyapa,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) PWR_MODE_FULL_ACTIVE, 0, CYAPA_PM_RUNTIME_RESUME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) if (error)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) dev_warn(dev, "runtime resume failed: %d\n", error);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) static const struct dev_pm_ops cyapa_pm_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) SET_SYSTEM_SLEEP_PM_OPS(cyapa_suspend, cyapa_resume)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) SET_RUNTIME_PM_OPS(cyapa_runtime_suspend, cyapa_runtime_resume, NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) static const struct i2c_device_id cyapa_id_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) { "cyapa", 0 },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) MODULE_DEVICE_TABLE(i2c, cyapa_id_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) #ifdef CONFIG_ACPI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) static const struct acpi_device_id cyapa_acpi_id[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) { "CYAP0000", 0 }, /* Gen3 trackpad with 0x67 I2C address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) { "CYAP0001", 0 }, /* Gen5 trackpad with 0x24 I2C address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) { "CYAP0002", 0 }, /* Gen6 trackpad with 0x24 I2C address. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) MODULE_DEVICE_TABLE(acpi, cyapa_acpi_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) #ifdef CONFIG_OF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) static const struct of_device_id cyapa_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) { .compatible = "cypress,cyapa" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) { /* sentinel */ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) MODULE_DEVICE_TABLE(of, cyapa_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) static struct i2c_driver cyapa_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) .name = "cyapa",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) .pm = &cyapa_pm_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) .acpi_match_table = ACPI_PTR(cyapa_acpi_id),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) .of_match_table = of_match_ptr(cyapa_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) .probe = cyapa_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) .id_table = cyapa_id_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) module_i2c_driver(cyapa_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) MODULE_DESCRIPTION("Cypress APA I2C Trackpad Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) MODULE_AUTHOR("Dudley Du <dudl@cypress.com>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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